Verdi, G. (2004). Verdi's a masked ball. Opera Journeys Publishing.
Dyfyniad Arddull ChicagoVerdi, Giuseppe. Verdi's a Masked Ball. Coral Gables, FL: Opera Journeys Publishing, 2004.
Dyfyniad MLAVerdi, Giuseppe. Verdi's a Masked Ball. Opera Journeys Publishing, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.